User Guide
165 
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184-pin memory module that supports RDRAM memory technology. A RIMM memory module may 
contain up to maximum of 16 RDRAM devices. 
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SDRAM is one of the DRAM technologies that allows DRAM to use the same clock as the CPU 
host bus (EDO
 and FPM are asynchronous and do not have clock signal). It is similar as PBSRAM 
to use burst mode transfer. SDRAM comes in 64-bit 168-pin DIMM
 and operates at 3.3V. AOpen is 
the first company to support dual-SDRAM DIMMs onboard (AP5V), from Q1 1996 
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SIMM socket is only 72-pin, and is only single side. The golden finger signals on each side of PCB 
are identical. That is why it was called Single In Line. SIMM is made by FPM or EDO
 DRAM and 
supports 32-bit data. SIMM had been phased out on current motherboard design. 










